Anybody had a tubal occlusion?

I was sterilised on the 20th Feb (laparascopic with clips attached to tubes) and was wondering if anybody else has had the same procedure and had any issues? I ask because my period arrived as normal afterwards but then my 2nd period arrived a week early (I'm normally 34 days exactly), didn't last as long, and I've had dark brown discharged for two weeks following. Sorry for tmi, I plan on going to the doctors on Tuesday but I'm freaking out in the meantime so anyone who could put my mind at ease would really help....